Section V-9A: Senatorial districts - Tenure.

The state shall be apportioned into forty-eight senatorial
districts in the following manner: the nineteen most populous
counties, as determined by the most recent Federal Decennial
Census, shall constitute nineteen senatorial districts with one
senator to be nominated and elected from each district; the
fifty-eight less populous counties shall be joined into
twenty-nine two-county districts with one senator to be nominated
and elected from each of the two-county districts. In
apportioning the State Senate, consideration shall be given to
population, compactness, area, political units, historical
precedents, economic and political interests, contiguous
territory, and other major factors, to the extent feasible.
Each senatorial district, whether single county or
multi-county, shall be entitled to one senator, who shall hold
office for four years; provided that any senator, serving at the
time of the adoption of this amendment, shall serve the full time
for which he was elected. Vitalization of senatorial districts
shall provide for one-half of the senators to be elected at each
general election.